Riggin, 37, was about to escort a Canadian police officer who
was bicycling through Carlsbad on a national cross-country autism
awareness ride, said police Senior Officer James Aladits.

The California Highway Patrol is investigating the accident.
Highway patrol Officer Tom Kerns said just before 1 p.m. Riggin was
riding with the motorcycle's emergency lights on in the bike lane,
north of Mountain View Drive.

The pickup truck turned into the bike lane and struck the police
motorcycle, which crashed, said Kerns. He said the pickup driver --
Kevin Blake Kyle, 20, of Oceanside -- wasn't hurt.